Refrigerant System Fault Finding - Chart 1.2 - Rheem 55027500 Service Instructions Manual

Refrigerant System Fault Finding - Chart 1.2

1.2
Isolate power,
reset overload and
restore power
Is the
evaporator fan motor
operating?
YES
Did
the overload trip
again?
NO
Fit gauges to high
and low side of
system
Test 7
Is the
head pressure
excessive?
NO
Test 8
Is
the suction
pressure low/vacuum
or excessively
high?
TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
This document is stored and maintained electronically by
Is the
supply voltage
YES
to the compressor
correct?
1.5
YES
LOW
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled".
NO
Test 6
NO
YES
Check for high condensing temperature due to:
1. Controlling thermostat not cutting out
2. Restriction or blockage in system
3. Incorrect TX valve operation
4. 550 Series - Poor bonding of the condenser
Refer to Technical Bulletin TB04-014 &
Procedure 20 in this manual
HIGH
Leak in refrigerant system
Note: Failure of the condenser will require
complete water heater replacement
18
2.1
Advise customer to have
electrical fault rectified
1.3
1.4
550275
2.2
551275
Locate and repair